EP2123784A8 - Si KILLED STEEL WIRE MATERIAL HAVING EXCELLENT FATIGUE PROPERTY AND SPRING - Google Patents

Si KILLED STEEL WIRE MATERIAL HAVING EXCELLENT FATIGUE PROPERTY AND SPRING Download PDF

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Publication number
EP2123784A8
EP2123784A8 EP07832956A EP07832956A EP2123784A8 EP 2123784 A8 EP2123784 A8 EP 2123784A8 EP 07832956 A EP07832956 A EP 07832956A EP 07832956 A EP07832956 A EP 07832956A EP 2123784 A8 EP2123784 A8 EP 2123784A8
Authority
EP
European Patent Office
Prior art keywords
steel wire
spring
wire rod
killed steel
ppm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP07832956A
Other languages
German (de)
French (fr)
Other versions
EP2123784A1 (en
EP2123784A4 (en
EP2123784B1 (en
Inventor
Tomoko c/o Kobe Corporate Research Laboratories in Kobe Steel Ltd. SUGIMURA
Koichi c/o Kobe Corporate Research Laboratories in Kobe Steel Ltd. SAKAMOTO
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kobe Steel Ltd
Original Assignee
Kobe Steel Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2006356310A external-priority patent/JP4177404B2/en
Priority claimed from JP2006356312A external-priority patent/JP4134224B2/en
Application filed by Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to EP11008115A priority Critical patent/EP2410069B1/en
Publication of EP2123784A1 publication Critical patent/EP2123784A1/en
Publication of EP2123784A8 publication Critical patent/EP2123784A8/en
Publication of EP2123784A4 publication Critical patent/EP2123784A4/en
Application granted granted Critical
Publication of EP2123784B1 publication Critical patent/EP2123784B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0006—Adding metallic additives
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/06—Deoxidising, e.g. killing
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

A Si-killed steel wire rod for obtaining a spring excellent in fatigue properties and a spring excellent in fatigue properties obtained from the steel wire rod are provided.
The Si-killed steel wire rod of the present invention contains Sr: 0.03-20 ppm (means "mass ppm", hereinafter the same), Al: 1-30 ppm and Si: 0.2-4% (means "mass%", hereinafter the same) respectively, and contains Mg and/or Ca by a range of 0.5-30 ppm in total.
Also, in the Si-killed steel wire rod of the present invention, oxide-based inclusions present in the wire rod contain SiO2: 30-90%, Al2O3: 2-50%, MgO: 35% or below (not inclusive of 0%), CaO: 50% or below (not inclusive of 0%), MnO: 20% or below (not inclusive of 0%) and SrO: 0.2-15% respectively, and total content of (CaO+MgO) is 3% or above.
A spring excellent in fatigue properties can be obtained by forming the spring from such steel wire rod.
EP07832956A 2006-12-28 2007-12-03 Si KILLED STEEL WIRE MATERIAL HAVING EXCELLENT FATIGUE PROPERTY AND SPRING Not-in-force EP2123784B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11008115A EP2410069B1 (en) 2006-12-28 2007-12-03 Si-killed steel wire rod and spring excellent in fatigue properties

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2006356310A JP4177404B2 (en) 2006-12-28 2006-12-28 Si-killed steel wire rod and spring with excellent fatigue characteristics
JP2006356312A JP4134224B2 (en) 2006-12-28 2006-12-28 Si-killed steel wire rod and spring with excellent fatigue characteristics
PCT/JP2007/073336 WO2008081673A1 (en) 2006-12-28 2007-12-03 Si KILLED STEEL WIRE MATERIAL HAVING EXCELLENT FATIGUE PROPERTY AND SPRING

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP11008115A Division EP2410069B1 (en) 2006-12-28 2007-12-03 Si-killed steel wire rod and spring excellent in fatigue properties
EP11008115.5 Division-Into 2011-10-06

Publications (4)

Publication Number Publication Date
EP2123784A1 EP2123784A1 (en) 2009-11-25
EP2123784A8 true EP2123784A8 (en) 2010-03-31
EP2123784A4 EP2123784A4 (en) 2011-04-27
EP2123784B1 EP2123784B1 (en) 2012-07-11

Family

ID=39588357

Family Applications (2)

Application Number Title Priority Date Filing Date
EP07832956A Not-in-force EP2123784B1 (en) 2006-12-28 2007-12-03 Si KILLED STEEL WIRE MATERIAL HAVING EXCELLENT FATIGUE PROPERTY AND SPRING
EP11008115A Not-in-force EP2410069B1 (en) 2006-12-28 2007-12-03 Si-killed steel wire rod and spring excellent in fatigue properties

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP11008115A Not-in-force EP2410069B1 (en) 2006-12-28 2007-12-03 Si-killed steel wire rod and spring excellent in fatigue properties

Country Status (6)

Country Link
US (1) US9062361B2 (en)
EP (2) EP2123784B1 (en)
KR (2) KR101146889B1 (en)
CN (1) CN101982555B (en)
BR (2) BR122016000461B1 (en)
WO (1) WO2008081673A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009174033A (en) * 2008-01-28 2009-08-06 Kobe Steel Ltd Steel for machine structure having excellent machinability
EP2682489B1 (en) * 2011-03-01 2021-01-13 Nippon Steel Corporation High-carbon steel wire rod excellent in drawability and fatigue characteristics after wire drawing
JP5937973B2 (en) * 2013-01-15 2016-06-22 株式会社神戸製鋼所 Si-killed steel wire rod having excellent fatigue characteristics and spring using the same

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4094666A (en) * 1977-05-24 1978-06-13 Metal Research Corporation Method for refining molten iron and steels
JPS629946A (en) 1985-07-08 1987-01-17 Sumitomo Electric Ind Ltd Manufacture of pipe composed of carbon-fiber-reinforced plastics
JPH0674485B2 (en) 1985-10-26 1994-09-21 新日本製鐵株式會社 High cleanliness steel
JPH0674484B2 (en) 1985-10-26 1994-09-21 新日本製鐵株式曾社 High cleanliness steel
JPH076037B2 (en) 1986-12-01 1995-01-25 新日本製鐵株式会社 Spring steel with excellent fatigue strength
JPS63227748A (en) 1986-12-19 1988-09-22 Nippon Steel Corp High strength steel wire for spring and its production
JPS63186852A (en) * 1987-01-30 1988-08-02 Nippon Steel Corp Ultra high strength steel wire having good heat resistance
JPS63192846A (en) 1987-02-04 1988-08-10 Nippon Steel Corp High strength steel wire rod for extra fine steel wire
JPH0234748A (en) * 1988-07-22 1990-02-05 Kobe Steel Ltd Silicon killed steel having excellent fatigue resistance
JP2898472B2 (en) 1992-05-26 1999-06-02 株式会社 神戸製鋼所 Spring steel, spring steel wire and spring with excellent fatigue properties
JP4083828B2 (en) 1996-05-17 2008-04-30 株式会社神戸製鋼所 Spring steel with excellent fatigue characteristics
JP3504521B2 (en) 1998-12-15 2004-03-08 株式会社神戸製鋼所 Spring steel with excellent fatigue properties
JP3548453B2 (en) 1999-02-25 2004-07-28 株式会社神戸製鋼所 Manufacturing method of carbon steel with excellent drawability
JP4423050B2 (en) 2003-06-18 2010-03-03 株式会社神戸製鋼所 High cleanliness steel with excellent fatigue strength and cold workability
JP4393335B2 (en) * 2004-10-01 2010-01-06 株式会社神戸製鋼所 Manufacturing method of high cleanliness steel with excellent fatigue strength or cold workability
JP4417792B2 (en) 2004-06-30 2010-02-17 株式会社神戸製鋼所 High cleanliness steel with excellent fatigue strength or cold workability
US7608130B2 (en) * 2004-01-22 2009-10-27 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Method for producing high cleanliness steel excellent in fatigue strength or cold workability
JP4347786B2 (en) * 2004-11-24 2009-10-21 株式会社神戸製鋼所 High cleanliness spring steel
JP4476834B2 (en) 2005-02-09 2010-06-09 株式会社神戸製鋼所 High strength steel with excellent delayed fracture resistance
JP4478072B2 (en) * 2005-06-09 2010-06-09 新日本製鐵株式会社 High strength spring steel

Also Published As

Publication number Publication date
BRPI0720475B1 (en) 2017-06-06
KR101108334B1 (en) 2012-01-25
EP2123784A1 (en) 2009-11-25
US9062361B2 (en) 2015-06-23
KR101146889B1 (en) 2012-05-16
KR20090087078A (en) 2009-08-14
WO2008081673A1 (en) 2008-07-10
EP2123784A4 (en) 2011-04-27
BR122016000461B1 (en) 2017-05-30
BRPI0720475A2 (en) 2014-10-14
EP2123784B1 (en) 2012-07-11
EP2410069B1 (en) 2012-09-19
CN101982555A (en) 2011-03-02
US20100098577A1 (en) 2010-04-22
KR20110083759A (en) 2011-07-20
CN101982555B (en) 2013-05-08
EP2410069A1 (en) 2012-01-25

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